Page
26
of
39
Component
3 months
6 months
9 months
G4 primary filter
Clean primary
filtration
It is recommended
to replace the G4
filter
Replace G4 primary
filter
F7 Secondary filter
Clean F7 secondary
filter
Clean F7 secondary
filter
Replace F7 secondary
filter
Compressor
Check whether the
compressor works
normally and whether
the vibration is
normal.
Check if the
compressor wiring is
loose
Check the compressor
wiring and make sure
the wiring is not
loose, and there are
no signs of damage or
overheating.
Heat Exchanger
Remove debris and
dust trapped on the
bilge and surface of
the coil
Clean the dirt on
both surfaces
Check for oiling the
surface (possibly with
freon leakage)
Controller
Check whether the
functions of the
controller are normal
Determine if the
wiring on the back
of the controller is
loose
Check if the controller
logic is accurate
Main Control Board
Check whether each
function is normal
Check wiring and
make sure it is not
loose
Check wiring for water
stains and keep dry
Defrost valve
Check wiring and
make sure it is not
loose
Check if the defrost
valve is working
properly
Check for signs of
overheating and
clogging. Check if the
coil is normal.
Insulation / Seal
Check for signs of
injury and
displacement. Replace
if worn or damaged.
Check for air
leakage, if any,
please add a seal.
Check for signs of
damage and
displacement. Replace
if worn or damaged.
Fan / Fan Motor
Check wiring and
make sure it is not
loose
Check if there is
wind coming from
the end of the air
supply. If not, please
turn off the unit.
Check whether the
wind speed at the end
of the supply air is
normal and perform
calibration.
Summary of Contents for DD Series
Page 8: ...Page 8 of 39 DD F Series...
Page 11: ...Page 11 of 39 3 8 Ducting Connection Diagram example...
Page 33: ...Page 33 of 39 7 2 Wiring Diagram...
Page 34: ...Page 34 of 39...
Page 35: ...Page 35 of 39...
Page 36: ...Page 36 of 39...
Page 37: ...Page 37 of 39...
Page 38: ...Page 38 of 39...
Page 39: ...Page 39 of 39...
